Collaborative Research: Polenet East: An International Seismological Network for East Antarctica

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。南极洲东部的高海拔地区对于确定最初的新生代冰川作用的位置和稳定其在温暖的间冰期期间的融化至关重要。然而，人们对这一地区的地质历史和维持高地的地球物理机制知之甚少。在2007-2009年，一个由24个宽带地震仪组成的阵列（名为GAMSEIS）被安装在东南极高原的甘布尔采夫山脉地区，作为南极洲的一部分。Gamburtsev省（AGAP）国际极地年项目。国际地球物理年AGAP/GAMSEIS方案包括其他国际伙伴在甘布尔采夫山脉两侧沿着和南极东部其他地区安装地震仪的计划。拟议的项目将继续运行六个已部署的AGAP/GAMSEIS台站两年，同时增加两个新的宽带地震台站，以扩大阵列的地理范围。大多数台站将设在现有的美国自主地球物理观测站和USAP燃料缓存地点，以尽量减少后勤支持。这个地震仪阵列，加上中国和日本（可能在不久的将来还有澳大利亚、法国和意大利）部署的地震仪，将为东南极高原下地壳和上地幔结构的长期研究提供一个稀疏但规模大的地震仪网络。对学生的持续依赖为这项拟议的研究提供了更广泛的影响，并在其教育使命中坚定地支持这项努力。

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). The high elevations of East Antarctica are critical in localizing the initial Cenozoic glaciation and stabilizing it with respect to melting during warm interglacials. However, the geological history for this region and the geophysical mechanism for maintaining the highlands are poorly understood. In 2007-2009, an array of 24 broadband seismographs (named GAMSEIS) was installed across the Gamburtsev Mountains area of the East Antarctic Plateau as part of the Antarctica?s Gamburtsev Province (AGAP) International Polar Year project. The IPY AGAP/GAMSEIS program included plans by other international partners to install seismographs at locations along the flanks of the Gamburtsev Mountains and in other East Antarctic regions. The proposed project will continue operating six of the deployed AGAP/GAMSEIS stations for two more years together with two new broadband seismic stations added to broaden the geographic scope of the array. Most stations will be located at the existing U.S. Autonomous Geophysical Observatories and the USAP fuel cache locations in order to minimize logistical support. This array, combined with seismographs deployed by China and Japan (and possibly Australia, France, and Italy in near future) will provide a sparse but large-scale network of seismometers for the longer-term studies of the crustal and upper mantle structures underneath the East Antarctic Plateau. Continued reliance on students provides a broader impact to this proposed research and firmly grounds this effort in its educational mission.